Hidden Expedition: Smithsonian Hope Diamond Download PC

Hidden Expedition: Smithsonian Hope Diamond Collector's Edition was released December 20, 2013 for PC and Mac (later also released for iOS and Android), and is the sixth game in the series. Players take on the role of a new recruit for the Hidden Expedition League of Preservation (H.E.L.P.) team who is tasked with finding missing shards of the Hope Diamond before a gang of thieves do.

This is the first game of the series developed by Eipix Entertainment, who have been put in charge of developing all future sequels. In creating the game, Big Fish and Eipix were aided by the National Museum of Natural History, a part of the Smithsonian Institution. According to Big Fish Games, this was the first such video game collaboration for the Smithsonian.